Explanation:
Sugar - Pure substance
Magnesium Ribbon - Pure Substance
Vegetable soup Heterogeneous mixture
Bath oil - Homogeneous mixture
Tin of assorted biscuits - Heterogeneous mixture
Peanuts and raisins - Heterogeneous mixture
Copper wire - Pure Substance
Bicarbonate of soda (Baking soda) - Pure Substance
Answer:
1. 10.37114 psi
2. 71.5178 KPa
3. 71517.8 Pa
4. 536.56 mmHg.
5. 21.12352 inHg
Explanation:
From the question given,
Pressure = 0.706 atm
The pressure in other units of measurement is obtained as follow:
1. Pressure in Psi
1 atm = 14.69 psi
Therefore, 0.706 atm = 0.706 x 14.69 = 10.37 psi
2. Pressure in KPa
1 atm = 101.3 kPa
Therefore, 0.706 atm = 0.706 x 101.3 = 71.5178 KPa
3. Pressure in Pa
1 atm = 1.013x10^5 Pa
Therefore, 0.706 atm = 0.706 x 1.013x10^5 = 71517.8 Pa
4. Pressure in mmHg
1 atm = 760mmHg
Therefore, 0.706 atm = 0.706 x 760 = 536.56 mmHg
5. Pressure in inHg
1 atm = 29.92 inHg
Therefore, 0.706 atm = 0.706 x 29.92 = 21.12352 inHg
Answer:
Australia is correct
Explanation:
Because it is not attached to any other place
One big reason is that farmers use lot's of chemicals for their plants to grow and those chemicals can get into drinkable water. Another reason is that almost 96.5% of earth's water is salt water which is really undrinkable. Hope this helped you! :D
Let us assume that there are 100 grams of substance present. The masses of the constituents will be:
C - 58.51 g
H - 7.37 g
N - 100 - 58.51 - 7.37 = 34.12 g
Next, we determine the moles of each substance by dividing by the atomic masses:
C - 58.51/12 = 4.88
H - 7.37/1 = 7.37
N - 34.12/14 = 2.44
Dividing all of the moles by the lowest number of moles, which is 2.44 of nitrogen, we get the ratio:
C - 2
H - 3
N - 1
The empircal formula becomes C₂H₃N
Next, we apply Graham's Law of diffusion, which mathematically is:
v₁/v₂ = √M₂ / √M₁
Let species 1 be helium, meaning v₁/v₂ = 3.2 and M₁ = 4
3.2 = √M₂ / √4
M₂ = 40.96
The mass of the empircal formula was:
12 * 2 + 1 * 3 + 14 = 41
The empircal formula is the molecular formula as their masses are approximately the same. This compound is C₂H₃N
